Physical World, Units and Measurements || Unit 1 || Applied Physics 1 || Polytechnic 1st semester 2022
Topics to Study are as follows - fundamental and derived physical quantities, dimensions and dimensional formulae, principal of dimensional homogeneity, measuring instruments and their least count. direct and indirect measurements, errors in measurements (systematic and random), absolute error, relative error and significant figures. in the syllabus of polytechnics 1st semester 2022 bter - PHYSICAL WORLD, UNITS, AND MEASUREMENTS physical quantities fundamental and derived dimensions and dimensional formulae of physical quantities principal of homogeneity of dimensions measurements measuring instruments, least count types of measuring (direct, indirect) errors in measurements (systematic and random) absolute error relative error significant figures. Physical quantities: a physical quantity is a quantity which can be measured or weighed. Unit: unit is a measurement or a process of determining the size of a physical quantity as compared to a basic reference standard. T...